🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.33 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.09

Radius: 1.76

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.011

Orbit Range: 0.64 AU - 0.66 AU

Year: 338 Days

Day: 21.3 Hours

Environment

Temp: -138 °C

Axial Tilt: 41.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.91 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 229.7

Radius: 14.6

Gravity: 1.08 G

Time & Orbit

Eccentricity (e): 0.053

Orbit Range: 0.86 AU - 0.96 AU

Year: 561 Days

Day: 12.4 Hours

Environment

Temp: -149 °C

Axial Tilt: 13.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 24,967,773 km

• M1: 181,612 km (0.056 R)
• M2: 641,625 km (0.092 R)
• M3: 1,170,753 km (0.062 R)
• M4: 2,409,872 km (0.096 R)
• M5: 4,323,079 km (0.109 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.05 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 226.6

Radius: 12.5

Gravity: 1.45 G

Time & Orbit

Eccentricity (e): 0.201

Orbit Range: 0.84 AU - 1.26 AU

Year: 695 Days

Day: 9.3 Hours

Environment

Temp: -155 °C

Axial Tilt: 22.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (4)

Outer Limit: 24,967,773 km

• M1: 155,432 km (0.111 R)
• M2: 890,855 km (0.093 R)
• M3: 2,810,346 km (0.079 R)
• M4: 4,825,279 km (0.114 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.09 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 724

Radius: 9.3

Gravity: 8.37 G

Time & Orbit

Eccentricity (e): 0.159

Orbit Range: 0.92 AU - 1.26 AU

Year: 735 Days

Day: 9.7 Hours

Environment

Temp: -171 °C

Axial Tilt: 10.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 24,967,773 km

• M1: 115,789 km (0.11 R)
• M2: 597,793 km (0.091 R)
• M3: 911,649 km (0.112 R)
• M4: 1,424,172 km (0.118 R)
• M5: 1,877,752 km (0.108 R)
• M6: 2,468,514 km (0.057 R)
• M7: 2,855,524 km (0.085 R)
• M8: 3,375,826 km (0.116 R)
• M9: 3,666,195 km (0.112 R)
• M10: 5,195,833 km (0.1 R)
• M11: 6,399,647 km (0.104 R)
• M12: 8,414,282 km (0.041 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.54 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 828.2

Radius: 14

Gravity: 4.23 G

Time & Orbit

Eccentricity (e): 0.185

Orbit Range: 1.26 AU - 1.82 AU

Year: 1234 Days

Day: 6.1 Hours

Environment

Temp: -189 °C

Axial Tilt: 4.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 24,967,773 km

• M1: 174,132 km (0.073 R)
• M2: 713,881 km (0.039 R)
• M3: 1,187,508 km (0.038 R)
• M4: 1,624,782 km (0.088 R)
• M5: 2,510,103 km (0.096 R)
• M6: 2,952,015 km (0.061 R)
• M7: 3,415,768 km (0.08 R)
• M8: 4,930,895 km (0.111 R)
• M9: 5,524,799 km (0.025 R)
• M10: 6,097,609 km (0.057 R)
• M11: 6,685,678 km (0.114 R)
• M12: 7,183,091 km (0.096 R)
• M13: 8,479,058 km (0.105 R)
• M14: 9,003,548 km (0.119 R)
• M15: 9,736,428 km (0.027 R)
• M16: 10,279,318 km (0.108 R)
• M17: 10,842,405 km (0.101 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.03 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 497.7

Radius: 8.4

Gravity: 7.05 G

Time & Orbit

Eccentricity (e): 0.23

Orbit Range: 1.56 AU - 2.5 AU

Year: 1867 Days

Day: 9 Hours

Environment

Temp: -200 °C

Axial Tilt: 6.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 24,967,773 km

• M1: 105,466 km (0.115 R)
• M2: 385,663 km (0.066 R)
• M3: 724,353 km (0.085 R)
• M4: 1,117,795 km (0.08 R)
• M5: 1,688,810 km (0.071 R)
• M6: 2,493,497 km (0.108 R)
• M7: 3,716,460 km (0.104 R)
• M8: 4,459,812 km (0.102 R)
• M9: 5,563,096 km (0.11 R)
• M10: 6,214,744 km (0.104 R)
• M11: 7,613,784 km (0.11 R)
• M12: 8,357,584 km (0.113 R)
• M13: 11,600,567 km (0.118 R)
• M14: 12,858,386 km (0.12 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.12 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 167.5

Radius: 13.1

Gravity: 0.98 G

Time & Orbit

Eccentricity (e): 0.039

Orbit Range: 2.04 AU - 2.2 AU

Year: 1993 Days

Day: 13.9 Hours

Environment

Temp: -193 °C

Axial Tilt: 5.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 24,967,773 km

• M1: 164,408 km (0.096 R)
• M2: 616,942 km (0.059 R)
• M3: 1,129,763 km (0.089 R)
• M4: 1,537,567 km (0.1 R)
• M5: 4,324,426 km (0.118 R)
• M6: 4,847,719 km (0.083 R)
• M7: 6,365,389 km (0.119 R)
• M8: 8,128,251 km (0.038 R)
• M9: 8,575,548 km (0.112 R)
• M10: 9,150,902 km (0.111 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 110.8

Radius: 11.3

Gravity: 0.87 G

Time & Orbit

Eccentricity (e): 0.124

Orbit Range: 5.2 AU - 6.68 AU

Year: 9347 Days

Day: 10.9 Hours

Environment

Temp: -215 °C

Axial Tilt: 32.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 24,967,773 km

• M1: 140,622 km (0.114 R)
• M2: 721,361 km (0.056 R)
• M3: 1,279,660 km (0.081 R)
• M4: 1,789,789 km (0.082 R)
• M5: 2,343,151 km (0.049 R)
• M6: 2,701,738 km (0.111 R)
• M7: 4,500,652 km (0.117 R)
• M8: 5,060,148 km (0.081 R)
• M9: 5,775,824 km (0.095 R)
• M10: 6,557,772 km (0.085 R)
• M11: 9,601,640 km (0.066 R)
• M12: 11,697,207 km (0.115 R)
• M13: 13,285,936 km (0.115 R)
• M14: 14,183,075 km (0.103 R)
• M15: 17,408,106 km (0.087 R)
• M16: 18,973,199 km (0.067 R)
• M17: 22,381,786 km (0.028 R)
• M18: 24,303,520 km (0.065 R)

Kuiper Belt

Range: 30 - 56 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 404 - 16,781 AU

Composition

Type: Cometary Reservoir

System's final boundary, containing trillions of icy planetesimals.

Gravitational Limit